Willi Maerz began his career in music at age five with his first piano lessons. Later, while majoring in piano at the Academy of Music, Munich, Germany, he also read instrumentation (with Prof Enjott Schneider), harmonics in jazz (with Kurt Maas) and composition theory (with Rudi Spring). After graduating, Willi Huber, under his nom de plume, Willi Maerz, very quickly succeeded in making a name for himself in the light and pop music genres with numerous CD-releases.
In 1998 the composer won a competition of the city of Frankfurt in cooperation with the Music Fair Frankfurt, Germany with "Ein Lied für Frankfurt" (a song for Frankfurt).
Since 2002 the hymn "Entrada Bavarica" composed by Willi Maerz is performed during the New Year’s Reception of the Governor of the German Free State of Bavaria.